Evaluation of the Beneficial Effects of a Product Containing Γ-aminobutyric Acid (GABA) on Climacteric Syndrome Disorders

The goal of this clinical trial is to learn if the food supplement based on GABA works to treat climateric symptoms. It will also learn about the safety of supplement based on GABA. The main question aims to answer: * Does food supplement based on GABA lower the climateric symptoms, such as hot flashes, sleep, disturbances, mood swings? * The supplement that will be administered is commonly available on the market and can be used without particular precautions. No important side effects are reported. Researchers will compare supplement based on GABA to a placebo (a look-alike substance that contains no active ingredients) to see if supplement based on GABA works to treat climateric symptoms. Participants will: * Take supplement based on GABA or a placebo every day for 3 months * Visit the clinic on day 7, 37 and 97 after enrolment for checkups and tests * Keep a diary of number and intensity of hot flashes * To fill scales evaluating sleep quality, anxiety, depression and quality of life